ATTiny Programmer Shield for Arduino Uno. I really like ATTiny projects. They are challenging to get everything to work in such a limited device, but the rewards are fantastic. Small projects, such as battery monitors, LED dimmers, and the like are possible; especially when using a larger microcontroller would be overkill..

I had been using SparkFun’s PGM-11801 Tiny AVR Programmer, but had a lot of trouble with the driver. Twice it just quit, and I had to reinstall the Arduino IDE and play around with stuff to get it to work again. I want to build stuff, not troubleshoot drivers. Besides, I want to program other ATTiny microcontrollers, not just the ATTiny85.

So I ended up going the route of using an Arduino Uno as the programmer, and it has been flawless. While you do not need a shield (you can breadboard the programmer), a dedicated shield really helps your production efforts. And if you are like me, you will have a spare Uno or two lying around you can dedicate for the programmer.

To program ATTiny microcontrollers, you need an Arduino Uno, this shield, and the ATTiny library, which is available from a lot of sources. To setup the Uno, use the built-in ArduinoISP sketch as is (no changes needed), and upload to the Uno. Note to do ArduinoISP upload, do not install the shield as the 10uF capacitor will not allow you to write to the Uno.

Once you have the sketch uploaded to the Uno, install the shield and setup the Arduino IDE to your favorite ATTiny board, set the board speed, and set the programmer to “Arduino as ISP”.

That’s it. You should then be able to burn the ATTiny bootloader or upload sketches to the ATTiny.

Please see http://www.RV-Project.com/projects/arduinoide.php for more information or to see more projects.

Parts List:

0.1uF 1206 capacitor (3 reqd).

1kohm 1206 resistor (3 reqd).

10uF@16V SMD capacitor (1 reqd).

3mm LED of your favorite colors (3 reqd).

Eight, 14, and 20pin IC sockets (one of each).

header pins for ISP connector and shield to Uno connection.

Note: the little cutout window in the PCB allows you to see the Rx/Tx LEDs on the Arduino Uno. See, I have thought of everything with this board.

Apple II peripheral card for A/D conversion of signals from radiation detectors (scintillator/photo multiplier combination). The card includes all necessary parts - pre-amplifier, amplification & pulse shaping, peak-detect and hold circuit, ADC timing circuit. Also included are 8 LEDs that can be toggled by writing to a specific Apple II memory location.

tiny voltage regulator board

This is a board for a Stepped Tone Generator (also known as Atari Punk).

Bill Of Materials

Keychain Fob from Black Mesa Labs with standard drill sizes (plated) in 0.001" mil units.

Henriks Homemade Vector Network Analyzer http://hforsten.com/improved-homemade-vna.html

Directional coupler for Henriks Homemade Vector Network Analyzer http://hforsten.com/improved-homemade-vna.html

Flash adaptor for ex USSR voltmeter V7-54. Digital board version with ROM based on 8x 556RT7A. This adaptor allow replace 8x 556RT7A with one flash chip. ROM dumps can download at: https://yadi.sk/d/_EYCmTjY3Nc4RK Altium project for this adaptor can be download at: https://yadi.sk/d/REC43TVu3QvAZJ

This is a version of my FTDI-be-gone RS-232 board, but with SSOP instead of QFN parts, and designed to be directly wired to a USB cable. Connect the signal/power ground pin of the USB cable to the GND pin and connect the cable’s shield to the SHLD pin of the USB connector (there is an RC circuit between the two designed to break ground loops but shunt AC to ground). Mount a PC pin DB9M on the edge of the board for the RS-232 connection.

• IC1 - CY7C65213
• IC2 - MAX3243ECDB
• FB1 - 400Ω ferrite bead
• C1-C4, C7 - 1µF
• C5 & C6 - 0.1µF
• C9 - 0.01µF
• C8 - 10µF
• C10 - 4700pF
• R1 & R2 - 330Ω
• R3 - 1MΩ
• TX & RX - 0805 LEDS

NOTE: Both ICs have pin 1 oriented towards the bottom of the board.

The pedalboard for arduino uno transforms the signal the arduino serial to MIDI serial.

Keychain ruler from Black Mesa Labs. 0.025" dimensions on one side, 0.25mm dimensions on the back.

A little baby programming board for USBASP. Solder on a 10-pin shrouded header onto the edge of it, just like on the USBASP. Make sure the key notch is facing UP! Also contains positions for two capacitors, and an empty spot (J1) for a female header, for inserting a crystal in case one is needed

Parts:

• Shrouded 10-pin header

• Single LED for power-on indicator, optional

• Resistor (any value you like to make the LED a pleasant brightness), optional

• 8-pin DIP socket

• Female header for plugging in a crystal, optional

• 2x Ceramic capacitors (22 pF or so, for the crystal), non-mandatory

A small, compact ATmega32u4 on a USB stick!

This board adapts the GPSDO diagnostic port to RS-232. You get to select whether to transmit the diagnostic output or the GPS NMEA output. PPS is sent to DCD, and is positive-oriented (that is, DCD asserts on-time).

The SOIC-16 chip is a MAX232. The SOT23-5 is a single inverter. All 6 caps are 0.1 µF. The edge-mounted DB9 should be a female. It can connect directly to a DB9M style serial port or cable. The diagnostic connector is a CUI MD60S. You use a straight-through mini-DIN-6 cable (like a PS/2 cable) to connect up to the GPSDO.

For maximum stability, you should keep this board connected permanently if you’re going to use it. Adding and removing powered loads on the diagnostic connector can have a short term stability impact.

This board adapts the GPSDO diagnostic port to USB. You get to select whether to transmit the diagnostic output or the GPS NMEA output. PPS is sent to DCD, and is positive-oriented (that is, DCD asserts on-time). The USB interface is a CDC device. Open it and set it for 9600 baud 8N1.

The SSOP chip is a CY7C65213. The SOT23-5 chip is a single inverter. The USB connector is a microB one. The diagnostic connector is a CUI MD60S. The passives:

• R1 - 10kΩ
• R2 - 4.7kΩ
• R3 - 1MΩ
• C1, C2 - 0.1µF
• C3 - 1µF
• C4 - 2.2µF
• C6 - 4700pF

RPUno

ATmega328P based controller board with pluggable connections. ICP1 pulse sensor (e.g. flow meter). Six digital I/O (3,4,10,11,12,13) with level shift in two pluggalbe groups that have a current source. Two analog channels (ADC0, ADC1) with 22mA current source for sensor loop. Power with 7 thru 36V DC.

GitHub Forum HackADay

Ham radio TNC based on the CHIP Pro from Next Thing co

Check http://ainslies..net/?p=14307 for BOM and assembly instructions

Do Ping 2 UI