hippy
Ex-Staff (retired)
The following is a simple test circuit to help verify correct operation of a PICAXE download cable.
Use a high-brightness LED with low current requirements ( most standard 3mm / 5mm LED's should be suitable ). Test with the download cable not connected, connect a 3xAA or 3xAAA battery pack with 0V to the LED cathode, +V connected to the top end of the 1K0 (TX/RX). If not bright enough try a different LED, if too bright you can increase the 1K0.
Plug the AXE027, AXE026 or USB010+AXE026 cable into the above circuit.
Run the View -> Options -> Port -> Serial Test. When the on-screen LED is clicked on and lit the physical LED should also light. When the on-screen LED is off the physical LED should also be off.
Open the Terminal display. Type some text in the lower Output Buffer and click the Send button; whatever was typed should appear in the upper Input Buffer. The LED should flicker on as data is sent.
Use a high-brightness LED with low current requirements ( most standard 3mm / 5mm LED's should be suitable ). Test with the download cable not connected, connect a 3xAA or 3xAAA battery pack with 0V to the LED cathode, +V connected to the top end of the 1K0 (TX/RX). If not bright enough try a different LED, if too bright you can increase the 1K0.
Code:
3.5mm Jack Socket .-----------. <---- TX/RX
| _|_
.--------------. | | |
.-| + + O |-------{ | | 1K0
| | .--. O |-------{ |___|
| | | | O |-------' |
| | `--' O |-------. __|__
`-| + + O |-------{ \ / LED
`--------------' | __\./__
| |
Viewed from above `-----------' <---- 0V
Run the View -> Options -> Port -> Serial Test. When the on-screen LED is clicked on and lit the physical LED should also light. When the on-screen LED is off the physical LED should also be off.
Open the Terminal display. Type some text in the lower Output Buffer and click the Send button; whatever was typed should appear in the upper Input Buffer. The LED should flicker on as data is sent.
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