Olympus E510 dummy battery BLM-01

thingiverse

**Update: Works Successfully** The adapter should fit perfectly in the Olympus E510 DSLR camera. Electrical contacts are designed with 6.4mm wide cable lugs (blue color code), which match ("Push On Blue Male 6.4mm") exactly. An 8mm barrel plug screws in seamlessly. A 3.5mm cable hole accommodates a second cable (in my case, to power an external screen) without any issues. Printed on the Prusa i3 mk2 with PLA (the cheapest transparent option from eBay). Designed using OpenSCAD. Electrical Requirements ----------------------- The camera demands two Lithium-Ion cells in series, which translates to 7.2V (calculated by doubling 3-4.2V). There is ample space inside this adapter for a voltage regulator (linear or switching) so the entire setup can be powered by a 12V wall wart. I incorporated a LM317 linear voltage regulator with a set voltage of 7.0V. Decoupling capacitors are 4.7uF/50V and 100nF ceramic at the input. Even under heavy load (up to 2A), the temperature remains within acceptable limits (the regulator can be touched without any discomfort). Peak power consumption up to 2A works flawlessly (2.2A is the typical current limiting point). According to CIPA, 1.6Ah is sufficient for capturing 650 images with the e510. This translates to 1600mAh/650 = 2.5mAh per picture. Given that one picture is taken every 30 seconds, this means 5.4 hours of continuous shooting with a 1600mAh battery (equivalent to an average current consumption of 300mA). **Warning: Incorrect Voltage, Polarity, or Electrical Surges Can Destroy Your Camera!** (Or at least don't blame me.) Updates: - Design completed and printing started? Yes! (4.3.2018, 9:30 AM) - Does the adapter fit in Olympus e510 mechanically? Yes! (4.3.2018, 11:30 AM) - Do electrical contacts match perfectly? Yes! (4.3.2018, 11:40 AM) - Does the circuit board fit snugly? Yes! (4.3.2018, 7:30 PM) - Does the barrel connector fit? --> The hole is a tiny bit too small (individual adaptation may be necessary depending on the type) (8.3.2018, 5:30 PM) - Does the camera work or remain unscathed? --> Yes! However, it displays "low battery" at 7V (the circuit needs to be adjusted to 7.4V); At 7.39V, it works successfully. (18.3.2018, 8:40 PM)