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Simon Merrett

Genesis, analysis, synthesis,

Bristol
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122 Followers
24 Following
9 Projects
166 Likes
simon-merrett
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This user joined on 07/15/2016.

12.3k
376
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

9.9k
25
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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

866
12
1
13
Use servos, alu profile, timing belt and 608 bearings to make one.
Project Owner Contributor

Cheap Linear Actuator

Simon MerrettSimon Merrett

626
9
9
10
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

1.4k
231
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Audio feedback for the brain-injured who need help learning to balance again.
Project Owner Contributor

SoleSense

Simon MerrettSimon Merrett

1.5k
8
15
7
Lithium coin cells are convenient energy stores for projects. Not safe if swallowed though. Can we do better?
Project Owner Contributor

Coin Cell Challenge...

Simon MerrettSimon Merrett

View all 9 projects

33.9k
709
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236
Modular self-reconfigurable robot, focused on all-terrain search and rescue operations using bio-inspired locomotion mechanisms
Project Owner Contributor

Dtto - Explorer Modular Robot

AlbertoAlberto

75.4k
2.2k
39
216
Building an open source robot arm for makers and small businesses
Project Owner Contributor

5+ Axis Robot Arm

Dan RoyerDan Royer

7.8k
43
18
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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

2.6k
34
13
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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

179
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Let's talk about radio.
Project Owner Contributor

RF Chat

Ted YapoTed Yapo

37.2k
468
89
333
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

18k
139
15
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The WEEDINATOR project continues .... The inevitability of robots working on farms draws ever nearer ....
Project Owner Contributor

WEEDINATOR 2018

Tegwyn☠TwmffatTegwyn☠Twmffat

11k
236
29
162
A better-than-servo motor for robotics
Project Owner Contributor

Custom motor for robotics

MishaMisha

6.8k
54
10
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Measures wind speed via inertial sensors and rain with capacitive. Maintenance free, LPWAN, 3D printed (Not yet another AWS)
Project Owner Contributor

Weather Pyramid

Manolis NikiforakisManolis Nikiforakis

6.6k
72
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Transmit radio signals using just a serial port? You bet!
Project Owner Contributor

Serial Port SDR

Ted YapoTed Yapo

4.7k
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[ an open-access peer-reviewed journal ]
Project Owner Contributor

Hackaday Journal of What You Don't Know

Aleksandar BradicAleksandar Bradic

4.5k
65
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Super-small, ultra-low-power 96 MHz Cortex M4F co-processor manages sensors and processes data allowing the MCU host attend to other things.
Project Owner Contributor

MAX32660 Motion Co-Processor

Kris WinerKris Winer

3.7k
89
15
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A high torque, high precision, Strain Wave Gear (harmonic drive) based 3D printable closed loop servo actuator for use in robotic arms
Project Owner Contributor

Open HD

Sam ArmstrongSam Armstrong

3.6k
53
15
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60 GHz radar distance sensor for your robot
Project Owner Contributor

Robot Radar Module

Ted YapoTed Yapo

3.6k
45
6
43
A credit card size Wireless Temperature & Humidity Node power by CR2032 Coin Cell
Project Owner Contributor

Wireless Temperature & Humidity Card

Will WhangWill Whang

3.4k
50
3
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The thinnest Magnetic Actuator!
Project Owner Contributor

Flexible PCB Actuator

Carl BugejaCarl Bugeja

2.8k
27
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Turn an old servo into a "forever flashlight"
Project Owner Contributor

Servo Generator Light

Ted YapoTed Yapo

2.3k
17
1
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A minimalist 1.5V coin cell led tree with all components and power source confined within a mini breadboard.
Project Owner Contributor

Joule Thief Mini Christmas Tree

Chris ChungChris Chung

1.9k
20
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A project in which I try to go faster and faster
Project Owner Contributor

The Rise and Fall of Pulses

Ted YapoTed Yapo

1.5k
38
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The reduction of strain-wave, but using a 'single' stage planetary gearset.
Project Owner Contributor

MPRT - Modified planetary robotics transmission

Daren SchwenkeDaren Schwenke

1.2k
36
2
49
Open source, 3D printed, cycloidal-based 6 axis robot arm
Project Owner Contributor

Sixi 2

Dan RoyerDan Royer

809
186
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Interference-resistant sensor for multiple-robot environments
Project Owner Contributor

Spread-Spectrum IR Proximity Sensor Module

Ted YapoTed Yapo

309
140
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A study for a simple pick-and-place head using a servo and an injection needle instead of a hollow-shaft stepper motor and a standard nozzle
Project Owner Contributor

simple pick-and-place head

Michael MayerMichael Mayer

View all

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Kris Winer wrote 08/19/2018 at 15:26 • point

Thanks for following my MAX32660 Motion Co-Processor project!

  Are you sure? yes | no

Simon Merrett wrote 08/20/2018 at 09:09 • point

Thank you for educating us on the implementation of these systems. Such a need for that, compared to the resources covering the theory, which are relatively easily available. 

  Are you sure? yes | no

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.

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