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Firmware, source code and sound recording for the Model Railway Level Crossing [0910211A-C]
The PIC12F617-I/P microcontroller firmware (HEX files) plus BASIC source code for the Model Railway Level Crossing.
Three different HEX and BAS files are supplied - see the parts list in the article for an explanation of what they are for. The audio file to record for the bell sound is also available to download, in WAV format.
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ISD1820-based voice recording and playback module
This small module can record and play back up to 10 seconds of audio by default, although this can be changed by varying the value of one resistor.
See the article on the Junk Mail Repeller in the August 2019 issue for more details. Also used in the July 2021 Model Railway Level Crossing project.
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Model Railway Level Crossing PCB [09108211]
The Level Crossing PCB.
Double-sided PCB with plated through holes, green solder mask and silkscreen overlay.
48 x 43mm.
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Pair of PIC12F617-I/P chips for the Model Railway Level Crossing [0910821A/B/C.HEX]
A pack of two PIC12F617-I/P 8-bit microcontrollers programmed with the firmware for the Model Railway Level Crossing.
Indiate whether you want the pair to suit a toggle switch (0910821A.HEX + 0910821C.HEX) or a momentary switch (0910821B.HEX + 0910821C.HEX).
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Model Railway Level Crossing PCB pattern (PDF download) [09108211]
A PDF with the PCB design of the Model Railway Level Crossing (single-sided).
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Mechanical diagrams and label artwork for the Railway Level Crossing (PDF Download)
The 1:1 scale mechanical construction details, servomotor box cutting diagram and the label artwork for the Railway Level Crossing.
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