Now pressfit the screw inserts with a soldering iron. The insets and screw holes are always a pair of a 4mm and a 5.6 mm hole. the 5.6 one is for the insets. Screw the main body and front body parts aswell as the screen lid together with M4 16/20mm screws....
Connect the dots representing the location of each pair of optical component leads, and mark the middle of the line between the two lead holes. The centre of D6 has been marked with a cross in the photo below, and the phototransistor lead locations and...
If you spend any time typing in your own basic programs, then you'll want a way to save and load. (incidentally I like writing Z80 assembly and have found that flashing to a rewriteable W27C512 is a great way to run my own programs. See my...
To build an external to the enclosure (but internal to the float box) power switch, solder together a USB-A plug, a USB-A socket and an inline latching Double Pole – Double Throw switch. The switch makes/breaks both the 5V and the GND connections from...
KiCad & PCB Being my first PCB ever, I started from scratch with KiCad Like a Pro 3rd edition in Udemy which gave me a basic understanding both of Kicad 6 and of PCB design. The course author also has a playlist on his YouTube...
I2C Scanning Use I2C scanning code given below to find the addresses of the sensor. Follow the Circuit diagram to make the connection diagram. #include void setup() { Wire.begin(); Serial.begin(115200); Serial.println("\nI2C Scanner"); } void loop()...
fix PAPER_GUIDE_left and PAPER_GUIDE_right printed parts with M3-14 and M3-16 screws, M3 waschers and M3 Nylstop nuts fix the paper support in the frame you will need to adjust the paper roll for the paper support to take in place.
After few months I notice a strange behavior in one of the units, it become that one of the ceramic capacitors was damaged by the electrolyte leak, either I didn't see it, either didn't clean the board very carefully after I replaced all the electrolytes....
Solder/desolder relevant wires so that the wiring path runs as follows Hot wire from input Power Cord -> DPDT Switch (top/outer contact)DPDT Switch (top/inner contact) -> FuseFuse -> 2nd Innermost screw on meter PCBInnermost screw on meter PCB -> 4-bases...
I bought a cheap 8-foot 16/3 (16 guage grounded) extension cord from the Big Box Store and cut it, leaving 6 feet for the plug-end and 2 feet for the socket-end. De-solder the input wires to the DPDT switch and replace & re-solder with the 6 foot...
The ATMEGA328p is pretty much the same as an Arduino mini, and to program an Arduino mini you would need a FTDI programmer in order to convert the USB to serial communication. In order to program the ATMEGA328p, the FTDI programmer needs to connect to...
Burning Bootloader To program the board you need to bootload it first. To do this you need another ATMEGA328p that is already bootloaded, which is an Arduino uno or similar. On the back of the board there are 6 exposed contacts which connect to the Arduino...