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Simon Merrett

Genesis, analysis, synthesis,

Bristol
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60 Followers
24 Following
8 Projects
132 Likes
simon-merrett
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This user joined on 07/15/2016.

8.5k
345
40
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Strain wave or harmonic drive gears are cool. As a cheap analog for metal or flex filament splined cup, try using timing belts.
Project Owner Contributor

Strain Wave Gear with Timing Belts

Simon MerrettSimon Merrett

7.3k
22
10
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Much cleverer people hacked the orginal UT390B laser range finder but no-one seems to have published what we know about the UT390+.
Project Owner Contributor

Peek inside UNI-T UT390B+

Simon MerrettSimon Merrett

637
9
1
11
Use servos, alu profile, timing belt and 608 bearings to make one.
Project Owner Contributor

Cheap Linear Actuator

Simon MerrettSimon Merrett

459
6
9
8
Indoor (lawn) bowls wheelchairs can be motorised to make the sport more accessible. We motorised one with steppers for 10% of a kit cost.
Project Owner Contributor

Stepper-motorised wheelchair

Simon MerrettSimon Merrett

1.2k
108
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6
Audio feedback for the brain-injured who need help learning to balance again.
Project Owner Contributor

SoleSense

Simon MerrettSimon Merrett

1.6k
7
0
5
A proof of concept ultra-low cost jog (and other gcode commands) control pendant for grbl CNCs. Concurrent with PC serial! DIY macros!
Project Owner Contributor

grbl "Man in the middle" CNC jog pendant

Simon MerrettSimon Merrett

View all 8 projects

28k
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205
Modular self-reconfigurable robot, focused on all-terrain search and rescue operations using bio-inspired locomotion mechanisms
Project Owner Contributor

Dtto - Explorer Modular Robot

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Building an open source robot arm for makers and small businesses
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5+ Axis Robot Arm

Dan RoyerDan Royer

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or "flip dotters" if you want. Let's just talk about flip-dot/flip-disc displays and projects using them :-)
Project Owner Contributor

Dot flippers

Yann Guidon / YGDESYann Guidon / YGDES

2.1k
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X carve Inspired Laser CNC machine which can help Develop quality PCB at home without using expensive photography films and dusty milling.
Project Owner Contributor

CNC Laser PCB Maker

manjuprasadmbasangimanjuprasadmbasangi

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A high speed and high torque robotic actuator using low-cost brushless motors, custom controller, 3D printed parts and bearings.
Project Owner Contributor

3D Printed Robot Actuator

Paul GouldPaul Gould

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The WEEDINATOR project continues .... The inevitability of robots working on farms draws ever nearer ....
Project Owner Contributor

WEEDINATOR 2018

TegwynTwmffat☠TegwynTwmffat☠

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Follow this project to learn how to use FPGAs and incorporate them into your projects.
Project Owner Contributor

The Hobbyists Guide to FPGAs

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3D printed MakerWheels integrate with standard threaded rods and screws to create low cost linear and rotary motion systems.
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MakerWheel

Scott WinrothScott Winroth

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Sightless Navigation And Perception (SNAP) translates surroundings into sound, providing continuous binaural feedback about the environment.
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SNAP: Augmented Echolocation

Dan SchneiderDan Schneider

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Measures wind speed via inertial sensors and rain with capacitive. Maintenance free, LPWAN, 3D printed (Not yet another AWS)
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Weather Pyramid

Manolis NikiforakisManolis Nikiforakis

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[ an open-access peer-reviewed journal ]
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Hackaday Journal of What You Don't Know

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A credit card size Wireless Temperature & Humidity Node power by CR2032 Coin Cell
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Wireless Temperature & Humidity Card

Will WhangWill Whang

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60 GHz radar distance sensor for your robot
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Robot Radar Module

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Turn an old servo into a "forever flashlight"
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Servo Generator Light

Ted YapoTed Yapo

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A minimalist 1.5V coin cell led tree with all components and power source confined within a mini breadboard.
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Joule Thief Mini Christmas Tree

Chris ChungChris Chung

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Develop user tracking technology and demo it using a rover robot to follow its user.
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Robo-Dog

Radu MotisanRadu Motisan

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An open-source, 4-channel differential dynamometer for post-stroke rehabilitation. Includes 4 force sensors, device with display and PC soft
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Dynamometer for Post Stroke Rehabilitation

Sergei V. BogdanovSergei V. Bogdanov

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System which allows individuals to gauge how well they are performing crucial pressure relief exercises in their wheelchairs.
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RiseUp! System: Wheelchair Pressure Relief Monitor

drewmandrewman

796
6
2
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Smart insole for diabetic people
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Ebers

Facundo NoyaFacundo Noya

634
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4
Easy 3D printer electronics 100% compatible with RAMPS 1.4 / Marlin
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OVM20 Lite

derethorderethor

499
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Couldn't fit another laser into the name
Project Owner Contributor

Lasercut, UV laser PCB printer

JLAMJLAM

498
7
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A new kind of gearbox. Holonomic transmission, direct-drive and continuously-variable. From reverse to full-forward, and in any direction.
Project Owner Contributor

The Robot with Balls Experiment

RoGeorgeRoGeorge

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Jasmine Brackett wrote 05/14/2018 at 18:07 • point

Great to meet you at Maker Faire UK!

  Are you sure? yes | no

Simon Merrett wrote 05/16/2018 at 21:36 • point

Great to meet you too! Still got that supercap tindie badge idea rolling round my head. Made one of the normal ones with my four year old last weekend https://i.imgur.com/TXERFAG.jpg

Sadly the pin and switch seemed to be missing from the other one you gave me (for my daughter) but I've ordered spare parts.

Still hasn't stopped us from shutting ourselves in our wardrobe for a disco using the one badge!

  Are you sure? yes | no

Afdhal Atiff Tan wrote 04/03/2017 at 07:22 • point

Hi Simon, thanks for following my battery balancer project! :)

  Are you sure? yes | no

Simon Merrett wrote 04/03/2017 at 08:41 • point

You're welcome. Julian Ilett would be very interested in this project and his YouTube channel has at least a couple of videos that discuss potential methods for efficient cell balancing.

  Are you sure? yes | no

Afdhal Atiff Tan wrote 04/03/2017 at 16:47 • point

Yup, I've seen his videos. Very interesting indeed.

  Are you sure? yes | no

esot.eric wrote 03/29/2017 at 09:18 • point

Howdy! Thanks for the follow!

  Are you sure? yes | no

Simon Merrett wrote 03/29/2017 at 11:37 • point

Eric(?), you're very welcome! I'm interested in this project because I am interested in robot arms and closed loop control (not experienced). I'm looking forward to reading more about the potential simplicity of your concept. So far, I'm not clear how it would work without resulting in a more complex need to know the states of the other degrees of freedom before working out each element's next move. But as I said, I have no experience of this area so I'm optimistic about the findings.

  Are you sure? yes | no

esot.eric wrote 03/30/2017 at 06:25 • point

Great thoughts, I'll address them in the next log-update! Prepare to be underwhelmed :)

  Are you sure? yes | no

ottoragam wrote 09/26/2016 at 05:54 • point

Thanks for the follow!

  Are you sure? yes | no

Simon Merrett wrote 09/26/2016 at 06:56 • point

You're welcome! Very interesting.

  Are you sure? yes | no

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